18 English CAUTION Disconnect the machine from the powersource before making any repair.TROUBLESHOOTINGSymptom Cause SolutionMotor will not start On/Off switch is in the “OFF”(0) position.Turn switch to the “ON” (I) posi-tionPower cord is not plugged in. Plug in power cord.Electrical outlet does not sup-ply adequate power.Try a different outlet.Tripped GFCI plug. Press “RESET” button on GFCIplug.Tripped circuit breaker. Switch off pressure washer. Thereset comes automatically oncethe temperature of the unitdrops.Unit does notreach high pres-sure.Diameter of garden hose istoo small.Replace with a 5/8 inch or largergarden hose.Water supply is restricted. Check garden hose for kinks,leaks and blockage.Not enough inlet water sup-ply.Open water source full force.Water inlet filter is clogged. Remove filter and rinse out inwarm water.Spray wand is on low pres-sure position.Turn spray wand to high pres-sure position.Output pressurevaries high andlow.Not enough inlet water sup-ply.Turn water on full force. Checkgarden hose for kinks, leaks orblockage.Pump is sucking air. Check that hoses and fittingsare air tight. Turn off machineand purge pump by squeezingtrigger gun until a steady flow ofwater emerges through the noz-zle.Water inlet filter is clogged. Remove filter and rinse out inwarm water.Discharge nozzle is obstruct-ed.Blow out or remove debris witha fine needle.Calcified gun, hose or spraywand.Run distilled vinegar throughdetergent suction tube.

Kärcher K 3.690 Operator's Manual